In the circuit below, v_s = -3 Volts, R₁ = 8Ω, R₂ = 4Ω. Find i in Amps. Give your answer to 3 decimal places.

In the circuit below, i = 3.5 Amps, R₁ = 3Ω and R₂ = 3.2Ω. Find V_s in Volts to 2dp.

For the loop picture below, v₁ = 1 V, v₂ = -1 V and v₃ = 2 V. Find v_x in Volts.

At the node picture below, i₁ = 3 A, i₂ = 4 A and i₃ = 2 A. Find i_x in Amps.

How many nodes are in this circuit? Express your answer as an integer.

If i = -1A, v = -5V, the circuit element below is supplying power. True or false?

Given the following list:

numbers = [ 2 , 6, 7, 6, 7, 10 ]

numbers[3] = 6 * numbers[1]

numbers[0] += 1

total = numbers[3] - numbers[0]

What is the value held by the variable total at the end of this calculation?

Given the code below, 

select

all statements that are true.

Given the following list:

numbers = [ 5 , 10, 7, 1, 5, 3 ]

numbers[3] = 2 * numbers[1]

numbers[0] += 1

total = numbers[3] - numbers[0]

What is the value held by the variable total at the end of this calculation?

Which is the correct way to define a dictionary?